External oil cooler/filter

[zeroaxe]

Top of the morning to you fellas!

I have a question regarding external oil filters/coolers and mounting. Main question really is about the radiator itself. when the engine stops, doesnt the oil 'drain out' of the radiator back into the engine case? I can not see how this would be a good idea, unless there is a one way valve somewhere in the fitting/s? I have one here with me, but havent looked at how this set-up might work(because it is in the car at the moment, and the weather is just HORRIBLE outside at the moment!! Wind and rain like I havent seen for AGES! so I am not going out ther eat the moment hehe.)

Any insight into this might/will be of much help, before I go and strip some stuff off and drill holes onto the bodywork to mount the radiator/filter. BTW, the radiator I plan on mounting next to/above the gearbox. LAter I will fab up an air scoop to aid getting air to the radiator if needed).

Cheers!